Apparatus for burning garbage or other refuse matter.



No, 647,432. Patnt e-d Apr. ID, I900.

C. T. WHEDON. APPARATUS FOR BURNING GARBAGE OR OTHER REFUSE MATTER.

(No Model.)

(Application filed Sept. 27, 1899.)

2 Sheets-Sheet l.

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(Application filed Sept. 27, 1889.) (No Model.) 2 Sheets-Sheet 2.

m: uonms vzrzns 00.. Puomumoq WASHIN To all whom it may concern.-

Be it known that I, CHARLES 'l. WHEDoN, T

rrED

PATENT FFlCE.

CHARLES T. WVHEDON, OF \VHITEFIELD, NEW HAMPSHIRE, ASSTGNOR OF ONE-HALF TO CHARLES HENRY WHEDON, OF SAME PLACE.

APPARATUS FOR BURNING GARBAGE OR OTHER REFUSE MATTER.

sPEcIFroA'rIou forming part of Letters Patent No. 647,432, dated April 10, 1900.

Application fi ed September 27, 1899. Serial No. 731,845. \NO model improved boilers and apparatus especially designed for the burning of garbage and other refuse matter as fuel, such boilers being preferably arranged in a connected series and provided with feeding apparatus arranged to supply such fuel continuously or at successive intervals. The boiler is of upright type, with central downwardfeed, and has at the base a central rotatable fuel-supporting grate or disk and a stationary annular fireegrate surrounding said disk. The boiler and its stationary grate are supported on brick walls, forming the foundation of the brickwork which incloses the whole structure, while a central pier in the ash-pit has asuitable step and bearing for a vertical shaft which supports the rotatable grate or disk and the gear ing therefor, ha vinga power-shaft extending outwardly therefrom and provided with a suitable clutch apparatus to connect it to or disconnect it from themotor for theseries of boilers. Access to the ash-pit and also to the fire-box of the,boiler will be had through the side walls when required Vertical flues surrounding the central fuel-feeding tube connect the fire-box with the smokechamber. A water-space surrounds allthese within the boiler-shell, the upper part being the steamspace. Feed-water pipes and steam-pipes are provided to keep up the circulation. Fire being started on the grates, fuel is supplied from above, the garbage or refuse becoming thoroughly dried and heated as itgradually descends. The rotation of the central grate, which is provided with obliquely-arranged vertical spreaders, causes the fuel to work outwardly onto the annular grate, where it is consumed, and the water is speedily heated to a high degree.

In the drawings, Figure 1 is a vertical section of one of myimproved boilers,showing the internal construction. Fig.2 is a vertical'sectional elevation of suitable elevating and feeding apparatus for supplying to the series 'of boilers or furnaces the refuse matter to be consumed therein. Fig. 3 is a diagram or plan of a battery comprising a series of fur naces connected to a single smoke-stack.

A represents the fire-box of the boiler or furnace, having a fuel-inlet door a.

B is the outer metal shell of the boiler, and

C the central feeding-tube, through which 60.

from the tire-box A upwardly to the smokechamber E, such smoke-chamber communicating through pipe c with pipe F, leading to the smoke-stack G, Fig. 3, common to all the boilers of the series. Each boiler is surrounded with a substantial brick wall H. At the bottom of the fire-box is the grate, composed of the stationary annular part J and the central rotatable part K, directly beneath the central supply-tube O. This central rotatable portion of the grateis furnished with oblique wings or spreaders k, as shown in Fig. 1, for the purpose of spreading the material or carrying it outwardlyonto the annular portion of the grate. The rotatable grate is mounted on a shaft and furnished with suitable beveled gearing and an actuating-shaft L for each furnace, extending outwardly and geared to a horizontal shaft M, Figs. 2 and 3, driven by power and. serving to rotate all the movable grates. A suitable clutch is provided to throw into and out of gear the shaft L of any one of the furnaces when desired. (See Fig. 1.)

Referring now to Fig. 2, the garbage or other refuse matter is first deposited in areceptaele tubes as fast as space is opened therein by the consumption of ,matter previously deposited. These tubes 0 may be somewhat larger at bottom than at top to facilitate the descent of material. The endless elevator-belt and the spiral conveyer are actuated by any suitable power, such as the engine 'I.

If the garbage is not suitably dried before depositing in the receptacle N, provision for draining or drying it during the passage through the elevator may be made, so as to deliver it into the feeding-tubes of the several furnaces in acondition capable of speedy combustion.

Vent-openings V, Fig. 1, are formed at intervals through the walls of thefeeding-tube O for the escape'of steam therefrom into the annular smokespace 6, surrounding said Each vent is provided with a shield or guard W, preferably integral with the tubewall, serving to deflect the material toward the center of the tube and keep the vent open and unobstructed. The draft will be sufficiently strong to carry away with the smoke all steam formed from moisture in the descending material.

ment according to circumstancesas, for instance, the elevator would be materially changed or entirely omitted if the plant were so located that the discharge from the teams would be at or above the level of the other conveying apparatus.

I claim as my invention- I. In a refuse-burning apparatus, the furnace having a central rotatable grate and a stationary annular grate at the base of the fire-pot, a central vertical feeding-tube for the refuse material, and vertical flues surroundingthelower portion of said tube above the fire-pot, and an annular smoke-chamber above said fiues, in combination with the water and steam space surrounding the fire-box, fiues and smoke-chamber, and with a funnel surrounding the feeding-tube above the smoke-chamber, so as to heat and dry the material in said tube and promote its combustion, substantially as set forth.

2. In a refuse-burning apparatus, a boiler or furnace having a central grate and firepot, a vertical feeding-tube leading to said fire-pot and formed with a series of ventopenings, each provided with an internal deflecting-shield, in combination with vertical dues and a water-space surrounding the lower part of said feeding-tube, and with an annular smoke-passage into which said vents open through the upper part of such tube, substantially as set forth. The mechanism will be modified in arrange- In testimony whereof I have affixed inysignature in presenceof two witnesses.

CHARLES T. \VHEDON. 

